CN2684491Y - Power saving control device for portable information equipment - Google Patents

Abstract

A power-saving control device of portable information equipment comprises a volume/scale comparison module and a volume/scale sensing module; when a user watches programs through the portable information equipment, the volume/scale sensing module senses the volume/scale in the television signal and transmits a sensing result signal to the volume/scale comparison module, and when the volume/scale comparison module finds that the volume/scale variation exceeds a preset variation interval, the volume/scale comparison module immediately sends a driving signal to close a backlight power supply of the display unit so as to enable the display unit to enter a standby mode to reduce the consumption of the power supply; otherwise, if the volume/scale variation is restored to the normal interval, the volume/scale comparison module will turn on the backlight power again, so that the display unit can output the television picture for the user to watch.

Description

Power saving control device for portable information equipment

technical field

The utility model relates to a power supply management technology, in particular to a technology that can turn off the backlight power supply of the display unit when the TV program played by the information equipment enters the advertisement period, and turn on the backlight power supply again when the advertisement period ends, so as to reduce power consumption Power saving controls.

Background technique

With the progress of semiconductor technology and manufacturing process, the volume of many information devices can be greatly reduced, such as mobile phones and notebook computers, etc. are all reduced in size. In addition, with the vigorous development of network, communication and audio-visual processing technology, many originally independent products can be combined into a new independent product, such as the integration of mobile phones and digital cameras into mobile phones with camera functions. On the other hand, in order to adapt to the trend of the times, people need to constantly accept new knowledge anytime and anywhere to enrich themselves. Because of this, in addition to focusing on the miniaturization of product size, some mobile phone or notebook computer manufacturers also develop information equipment with Internet access capabilities in conjunction with wireless network technology. Portable information equipment for users can still pass through Mobile phones or notebook computers browse the web to obtain the required knowledge; and due to the maturity of today's liquid crystal display manufacturing technology, various portable information devices also use it as a display unit. This approach can not only reduce the size of the device itself In addition, it can also output a variety of color combinations, so that users can enjoy vivid colors visually. Because of this, at the Tokyo Computer Show in 2003, some manufacturers combined liquid crystal displays with communication transmission and audio-visual output technologies, and launched mobile phones and personal digital assistants with the function of watching TV, hoping to increase the added value of portable information devices. , to increase consumers' willingness to purchase. Although portable information devices with TV program playback function can indeed bring more enjoyment to users, it is well known that mobile phones with color screens using liquid crystal displays drain faster than mobile phones with monochrome output Many times, if the TV viewing function is added, the rechargeable battery with limited energy storage will further accelerate the consumption of power. When the battery is fully charged, only about 1 hour of wireless TV programs can be watched. For users who watch TV programs to obtain information, only about 1 hour of playing time is not enough. Therefore, how to increase the time for the portable information device to watch TV programs using the rechargeable battery without increasing the battery power is a technical problem to be solved urgently at present.

Utility model content

In order to overcome the above-mentioned shortcomings of the prior art, the main purpose of this utility model is to provide a power-saving control device for portable information equipment, which is to make the display unit of the portable information equipment enter the standby mode when the TV program played by the portable information equipment enters the commercial period , to reduce power consumption of portable information devices.

Another object of the present invention is to provide a power-saving control device for portable information equipment, which can reduce the use time of the display unit of the portable information equipment and prolong the service life of the display unit.

In order to achieve the above-mentioned purpose, the utility model provides a power-saving control device for portable information equipment.

The portable information device has at least one display unit and an audio unit. The power-saving control device compares the volume/scale change, compares the obtained volume/scale change with a preset volume/scale interval value, and then As a result, the backlight power of the display unit is controlled to be turned on and off.

The power-saving control device of the present utility model comprises (1) volume/scale sensing module, detects the volume/scale signal in the portable information device; The measured signal is analyzed to obtain the change of the volume/tone scale, which is used as the basis for driving the backlight power of the display unit to be turned on or off.

To sum up, the power saving control device of the present invention can turn off the backlight power supply of the display unit when the TV program played by the portable information device enters the advertising period, so that the display unit enters the standby mode, which can greatly reduce the power consumption of the display unit. For most users, the advertising period is mostly the time to leave the display unit to do other things. Therefore, if the user does not want to watch the commercial period, the display unit does not need to continuously consume the power stored in the rechargeable battery during the commercial period, which can slow down the power consumption. According to 1 hour of broadcasting time, there are about 4 commercial time slots, and each 5 minutes as an example, the battery power is actually used for watching TV programs for only about 40 minutes. Therefore, the power-saving control device provided by the utility model can automatically make the display unit enter the standby mode when the TV program enters the commercial period, and slow down the consumption speed of the battery power. The viewing time, that is, the battery power supply time for viewing can be extended to 1 hour and 20 minutes, so the efficiency of users acquiring new knowledge through portable information devices can be greatly improved.

Description of drawings

FIG. 1 is a block diagram showing the schematic structure of the power-saving control device of the present invention applied in a notebook computer.

Detailed ways

Example

Fig. 1 is a block diagram showing the schematic structure of the application of the power-saving control device 10 of the present invention in a notebook computer 1. The power-saving control device 10 of the present invention also includes a volume/scale comparison module 11 and a volume / scale sensing module 12, the notebook computer 1 that it is attached to then includes liquid crystal display 20 (Liquid Crystal Display, LCD), display control unit 30, display processing chip 40, microprocessing unit 50, power supply device 60, digital /analog converter 70 , video conversion card 80 , power amplifier 90 and audio unit 100 . It should be noted that the notebook computer 1 includes other functional components, such as the south bridge chip, the north bridge chip, etc., and only the functional components related to the utility model are described here. In addition, the utility model is not only applicable to In notebook computers, that is, the utility model can also be applied to any information equipment with TV program viewing function, especially portable information equipment with rechargeable batteries as the main power source, such as personal digital assistants, mobile phones, etc.

The power-saving control device of the utility model is to use the situation that the output volume/scale will be higher than the original set volume/scale when the TV program enters the advertisement to carry out power-saving control on the notebook computer 1 . As shown in Figure 1, the power-saving control device 10 of the present utility model is assembled in the interior of the notebook computer 1, and the notebook computer 1 is provided with a video conversion card 80, which receives the analog program signal sent by the wireless TV station, and receives the The analog signal is converted into a digital signal through a digital/analog converter 70, and then passed through a display processing chip 40. After analysis and sorting, it is sent to the liquid crystal display 20 to display the program picture and the audio unit 100 to output the program sound effect. The above-mentioned process of program signal input from the video conversion card 80 to the liquid crystal display 20 output image is a commonly used technology, so it will not be repeated here.

The power-saving control device 10 of the present utility model is overlapped with the micro-processing unit 50 , the video conversion card 80 and the power amplifier 90 contained in the notebook computer 1 . When the user watches a TV program through the notebook computer 1, the volume/scale sensing module 12 (which can be a field-effect transistor, transistor or bipolar transistor) contained in the power saving control device 10 immediately responds to the input to the video conversion card 80. The volume/scale signal contained in the analog signal is sensed, and the volume/scale sensing module 12 also senses the volume/scale signal to be output by the power amplifier 90 at the same time, and inputs the volume/scale signal obtained by sensing In volume/scale comparison module 11, make volume/scale comparison module 11 compare the volume/scale signal between video conversion card 80 (input end) and power amplifier 90 (output end), obtain the change situation of volume/scale signal , if the volume/scale comparison module 11 compares and finds that the variation of the volume/scale signal exceeds the preset volume/scale level of the power amplifier 90, that is, the converted volume/scale level of the volume/scale signal at the input end exceeds the current volume/scale level. The volume/scale level of the output terminal, in other words, according to the result that the volume/scale level of the advertisement is greater than the volume/scale level of the TV program, the volume/scale comparison module 11 determines the user’s The TV program watched by the notebook computer 1 is about to enter the advertisement period, so a driving signal is sent to the microprocessing unit 50 to activate the backlight control pin of the microprocessing unit 50, and drive the image control circuit 32 and the video control circuit 32 contained in the display control unit 30. The backlight controller 31 turns off the backlight power of the liquid crystal display 20 and makes the liquid crystal display 20 enter the standby mode to reduce the power consumption of the power supply device 60 and achieve the purpose of saving power.

On the other hand, if the analysis of the volume/scale comparison module 11 shows that the volume/scale signal change amount transmitted by the volume/scale sensing module 12 is already in the preset volume/scale level interval, it will determine The advertising period has ended, and there is no need to make the liquid crystal display 20 enter the standby mode. Then the volume/scale comparison module 11 will send a wake-up signal to the microprocessing unit 50, so that the backlight control pin of the microprocessing unit 50 will drive the backlight controller 31 to re-operate, and the backlight power of the liquid crystal display 20 will be turned on again, so that the TV can output The picture is for the user to watch; at the same time, the volume/scale comparison module 11 will also drive the audio unit 100 to output prompt sound effects such as ringing and music to inform the user that the commercial period is over and the TV program has started.

Claims (10)

1. A power-saving control device for a portable information device, used to reduce the power consumption of the portable information device, characterized in that the portable information device has at least a display unit and an audio unit, and the power-saving control device is a contrast volume/scale The volume/scale change is compared with a preset volume/scale interval value, and then the backlight power of the display unit is controlled to be turned on and off according to the comparison result. 2. The power-saving control device according to claim 1, characterized in that the power-saving control device comprises a volume/scale sensing module, which detects the volume/scale output by the audio unit of the portable information device. 3. The power-saving control device according to claim 1 or 2, wherein the power-saving control module includes a volume/scale comparison module for detecting the volume/scale obtained by the volume/scale sensing module Compare to obtain a volume/scale change. 4. The power saving control device according to claim 1, wherein the portable information device has a TV frequency modulation module, so that the portable information device has the function of playing TV programs. 5 . The power saving control device according to claim 1 , wherein the portable information device refers to one of a notebook computer, a mobile phone, a personal digital assistant, and a palm-sized audio-visual player. 6 . 6. The power saving control device as claimed in claim 1, wherein the display unit is a liquid crystal display. 7. The power saving control device according to claim 1, wherein the volume/scale range value is set according to the volume/scale range value output by the portable information device when playing a TV program. 8. The power saving control device according to claim 7, wherein when the output volume/scale of the portable information device is greater than the preset volume/scale interval value, the backlight power supply of the display unit is turned off so that the display unit enters the standby mode. 9. The power-saving control device according to claim 7, wherein when the volume output by the portable information device is lower than the preset volume/scale interval value, the backlight power of the display unit is turned on so that the display unit enters the power-on mode . 10 . The power-saving control device according to claim 9 , wherein when the backlight power of the display unit is turned on, the power-saving control device can also emit a prompt sound effect to remind the user that the TV screen has been output again. 11 .